1. JLEIC Collaboration Meeting Closeout considerations
Fulvia Pilat (JLab)

2. JLEIC : pronounced as “Jay-Like” Not: J-L-E-I-C Je-lik Gee-like ……..

3. Collaboration
NP Panel emphasis on collaboration: US labs, universities, international
Ideas!
Multiple bend achromat lattice for e-ring
Comprehensive Impedance model
Multiple multipole correctors
Beam-beam kickers
……….
Challenge:
Limited funding  “sharpen pencils”
leverage funding (LDRD, state…)

4. Collaboration strategy
Collaborative task forces JLAB-BNL, which engage SLAC, LBL, ANL, FNAL and Universities on common R&D
Strong cooling
IR magnets
Beam-beam
Polarization
 Common R&D proposals for FOA
Continuation of collaboration of JLEIC specific R&D
 Project specific R&D proposal for FOA
Propose to set-up o continue regular video-conferences with collaborating institutions

5. Collaboration opportunities
2 day workshop to to plan and focus IR magnets work with participation BNL, JLAB, LBL, TAMU
select one or two challenging magnets to design and prototype
Common collaboration meeting in October JLAB, BNL and others
proposal from LBL to hold it in Berkeley, following the beam-beam workshop end of September
International Users Group Meeting in Trieste July18-22 with one day (July 18) mini-workshop on accelerator designs for EIC
developing interest in UK, Italy, France

6. FOA FOA delayed at minimum by 2 months CONS: pain is obvious
PROS: more time to define collaborative projects and prepare proposals

7. Cooling Conceptual Design Study
Possible PI
Alexei Fedotov (BNL) Yuhong Zhang (Jlab)
Topics
Collaborative Task Force:
Work out EIC designs with both magnetized electron cooling (BBeC) and coherent electron cooling (CeC),
Develop a common simulation platform
Main deliverable
Establish limits of cooling (BBeC and CeC), suite of simulation tools
FOA proposal
Yes
Interest
High
Comments
High priority from review panel.
Questions: does CeC work for JLEIC? does BBeC work for eRHIC?
A Collaborative Task Force to explore limits of strong cooling and improve simulation tools

8. Beam-Beam Simulation Tools Development and Application to eRHIC and JLEIC
Possible PI
Yue Hao (BNL), Yves Roblin (JLab)
Topics
Collaborative Task Force:
Comparing and benchmarking available beam-beam codes, make improvements and apply the codes to electron ion collisions
Main deliverable
Improved codes
simulation results with JLEIC & eRHIC beam parameters
FOA proposal
Yes
Interest
High
Comments
High priority from review panel.
Beam-beam combined with space charge?
LBL as a possible collaborator/subcontractor.
Put beam-beam workshop on funding scope, travel support. Include crabbing effects.

9. Study of Electron Beam Polarization During Acceleration and Beam Storage
Possible PI
Francois Meot (BNL) and Fanglei Lin (JLab)
Topics
Collaborative Task Force:
Perform systematic simulations of electron beam polarization during acceleration and store assuming realistic errors and study mitigations of any issues
Main deliverable
Study Report
FOA Proposal
Yes
Interest
High
Comments
Spin tracking already in progress for protons and electrons at JLab.
Existing informal collaboration with Francois already in place,
Scope could be widened and formalized. Focus on the electron spin.

10. Design and Prototype of IR Magnets
Possible PI
Brett Parker (BNL), Tim Michalski (JLab)
Topics
Collaborative Task Force:
Study the feasibility of a common IR magnet design for JLEIC and eRHIC and develop prototype
Main deliverable
Design and prototype IR magnet
FOA Proposal
Yes
Interest
High
Comments
Design led by Brett Parker with collaboration of JLAB magnet engineers.
Consider to engage LBL as collaborators/subcontractors

11. Electron Source Development
Possible PI
Erdong Wang (BNL), Matt Poelker (JLab)
Topics
R&D for eRHIC ERL-ring and ring-ring polarized sources
Improve the JLAB polarized gun and start performing systematic measurements to clarify source of ion bombardment
Main deliverable
Report on systematic measurements with the JLAB Gun
FOA Proposal
Yes
Interest
High
Comments
Relevant also to JLab electron cooler design with high current and high charge,
positron production

12. Crabbing Integration, Dynamics, and Demo in RHIC
Possible PI
(BNL) , Bob Rimmer and Vasiliy Morozov(JLab)
Topics
Plan and execute crabbing demo in a hadron machine
Main deliverable
Crabbing test
FOA Proposal
Yes
Interest
High
Comments
Demonstration of crabbing in an existing machine, possibly at RHIC.
Mitigating strategy if SPS test delayed orunsuccessful
JLab could provide study and cavities/cryostat. 336 MHz needed to work in RHIC.
Initially we can propose a feasibility study for a test.

13. Study of Electron Cloud Effects in EICs
Possible PI
Michael Blaskiewicz (BNL) , Rui Li (JLab)
Topics
Study the electron cloud effect in eRHIC and JLEIC, and develop countermeasures, improve on in situ CU and C coating
Main deliverable
Report and Analysis and plan on countermeasures
FOA Proposal
Yes
Interest
Medium
Comments

14. Design & Simulation of ERL for CeC & BBeC
Possible PI
Wencan Xu (BNL) , Bob Rimmer, Steve Benson (JLab)
Topics
Designing the SRF, lattice and return loops for the electron cooling energy recovering
Main deliverable
Design of the SRF, lattice and return loops for e-cooling ERL
FOA proposal
Yes
Interest
Medium
Comments
JLEIC already working on this for the BBeC cooler, we could leverage this.
BNL possibly to contribute to design. beam break-up. HOM coupling.

15. Performance Study of He-3 Ion Source
Possible PI
Anatoli Zelenski (BNL) , Amy Sy (JLab)
Topics
Performing systematic measurements on existing He-3 ion source
Main deliverable
Test report on He-3 Performance
FOA proposal
Yes
Interest
Medium
Comments
We could have Amy Sy joining the proposal.
Consider engaging ANL as collaborator/subcontractor

16. Head-on IR Design and Dispersive Crabbing
Possible PI
Christoph Montag (BNL) , Vasiliy Morozov (JLab)
Topics
Study alternatives to IR design with no crabbing scheme
Main deliverable
alternative luminosity scheme
FOA proposal
Yes
Interest
Medium
Comments
High priority from Committee.
We do not believe it is feasible for high-luminosity

17. Broadband Kicker for Feedback Systems
Possible PI
Michael Blaskiewicz (BNL) , Bob Rimmer (JLab)
Topics
Design kicker and feedback system
Main deliverable
Feedback system design and validation
FOA proposal
Interest
Medium
Comments
Priority from Committee high
Consider engaging SLAC, ANL as collaborators/subcontractors

18. JLEIC specific FOA collaborative proposal
3T super-ferric prototype, fabrication and test (FoA)
High current magnetized e- injector (LDRD)
High power kickers for e- ring (FoA ?)
Gear change synchronization (FoA)
Integrated re-circulator test at LERF (VA–design/planning)
Operate CEBAF in JLEIC injector mode (?)
Re-circulator cooler design (FoA)
952 MHz prototype (VA)
Crab cavity prototype (VA)
Fast kicker prototype (FoA)
others…….. discussion today/tomorrow